Slider for slide fasteners



jan. 7,1936'. I

D, B. GlLMoRi-i SLIDER FbR SLIDE FASTENERS Filed Novi 12, 1934 m m. K, r6 m 3 {g/clays. 7'

Patented Jan. 7, 1936 SLIDER FOR SLIDE FASTENERS Delbert n. Gilmore,Erie, ro., ossignor 'to nookloso Fastener Company, Meadville, Pa., acorporation'of Pennsylvania Application November lz, 1934, serial No.152,519 4 Claims. (Ci. .t4-205) This invention relates to sliders forslide fasteners and particularly to a locking type slider. Various formsof locking devices have been proposed for retaining the slider in thedesired 5 position on the rows of fastener elements in a -slidefastener. More recently automatic lock sliders have been introducedwhich comprise generally a locking member movable relativetov the sliderand normally held in locked position by e.

spring or its equivalent, such member being antw matically moved tounlocked position 'when the pull tab is lifted to operate the slider.

'lhe object of my invention is to provide an. improved form of automaticlool: slider for slide fasteners which shall be neat in appearance,simple in construction and which shall possess the necessary ruggednessand strength to withstand the severe strains imposed upon such devicesin actual use.

' 20 In the accompanying drawing I have shown for purposes ofillustration one embodiment which my invention may assume in practice.in the drawing:

Fig.' 1 is a front view of a portion oi a slide fastener and sliderequipped with my improved automatic lock;

Fig. 2 is a central longitudinal cross-section;

Fig. 3 is e. crosswsectlon on line of l; and

Fig. 4 is a perspective view of the locking' ineinber detached.

l have shown a conventional slide fastener het ing dexible tapestringere 5, t, with rows oi' interlocking elements 7, secured to theirmeeting edges. The slider used forengaging and disengaging the fastenerelements may be oi n wellknown form comprising a body member t, havingan interior channel 9, of the desired shape, tor guiding the fastenerelements into andout oi' en-n 40 sagement. v

In the upper or front wall of the slider there is an opening I0 shownherein, of rectangular cross section, but which may be of any suitableshape. A locking member I I is loosely ntted in the open ing I0. so asto be free to move in said ope into and out' of locking position. eiooldns member carries on its interior tace locking loro,

gestions I2 and it which are staggered relativo to one another so as toengage in spaces between f the rows of fastener elements.. lfinch spacesere,

oi course, stagnered relative to one another es seen in Fig. l.. Thelocking projections here in cllned surfaces on one side and perpendieulesurfaces on the other side, so that the looming member will neverobstruct' a deliberate ol movement of the slider, but rather cam up overthe fastener elements. V

A slider of a conventional type is employed, having a lug extendinglongitudinally throughout substantially the entire length of the slider.5 Such-lug is hollowed or recessed out at I5 to form a loop I6, whichpasses centrally over the looking member. The locking member hasupwardly extending guide arms il,v I8, which env gage on opposite sidesof the loopV and effectively 10 guide the upper end of the lockingmember in its movement. A resilient device., herein in the form of acoiled spring I9, is placed between the loop and locking member so as topress the locking member normally toward looming position. Pref- 15erably the spring is arranged between the arms il, I8 which preventitfrom accidental displacement. The pull tab 20 has tons il engaging inelongated recesses 22, in the locking member. Thus when the pull tab islifted to operate the 20 slider in either direction, the locking memberwill be lifted against Athe compression oi the spring it, and New; theloolring projections it, i3 from the tastener members, so that theslider can be freely moved in either direction. 25

In assembling the parts of the slider, the coil spring and lockingmember can he placed in the opening it before theslider is placed on theiastener elements. The tions of the pull tab will serve to hold thelooking member from drop- 30 ping out of the opening it, until theslider is assembled on the fastener.

ils a result of my invention it be observed that an improved autoticloclr` slider has been provided which utilizes a conventional form of 35slider and which is not likely to set out oi. order because of itsrugged and durable construction.

e I have shown and described in this application one emboent which myinvention may e in practice, it will he understood that 4o thisdescription is merely for the purposes oi illustration and that variousother forms may be devised within the scope oi xny invention os deunedin the appended claims.

't' t i, i el as my invention is: 4.5 i. n. slider for slide fastenerscomprising a body member ha an interior enel, the body its ha o openingcommunieating with said c a slider looking member movably mounted in dopening and having50 locking projections adapted to engage betweenfastener elements in the slider channel, means for :om ng said lockingmember position comprising a loop attached tothe slider body andextending centnilyover said locking member, a 55 spring between said lopand said locking member which normally presses said locking memberinwardly toward locking position, and an operating member attached tosaid locking member.

2. A slider for slide fasteners comprising a body member having aninterior channel, the body member having also an opening communicatingwith said channel, a slider locking member movably mounted in saidopening and having locking projections adapted to engage betweenfastener elements in the slider channel, said locking member havingupwardly extending spaced-apart arms, a relatively stationary guideelement secured to the slider and positioned between said arms, and alock operating member attached to said up- Wardly extending arms.

3. A slider for slide fasteners comprising a body member having aninterior channel, the body member having also an opening communicatingwith said channel, a slider locking member movably mounted in saidopening and having locking projections adapted to engagevv betweenfastener elements in the slider channel, a. longitudinally extendingloop on said slider passing centrally over said locking member. andmeans carried by amasar said locking member and cooperating with saidloop to guide the same, and a spring positioned between said loop andlocking member for normally 4pressing the locking member toward lockingposition, anda slider pull member attached 5 to said locking member.

4. A slider for slide fasteners comprising a body member having aninterior channel, the body member having also an opening communicatingwith said channel, a slider locking member mov- 10 ably mounted in saidopening and having locking projections adapted to engage betweenfastener'elements in the slider channel, said locking member havingupwardly extending guide arms, a longitudinally extending lug on saidslider 1| hallowed out to form a loop in the central portion whichpasses over said locking member, a spring positioned between said loopand said locking member for normally pressing the locking member towardlocking position, the pair of arms zo on said locking member arranged onopposite sides of said lug for guiding said locking member, and a slideroperating member secured to said locking member.

DELBERT B. GILMORE. l5

